package com.xyz.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.security.PublicKey;
import java.util.concurrent.TimeUnit;

/**
 * @author 肖咉卓
 */
@Service
public class PaymentService {

    /**
     * 正常访问，一切ok
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id){
        return "线程池："+Thread.currentThread().getName()+"\t paymentInfo_OK,ID"+id;
    }

    /**
     * 需要timeNumber秒钟才能执行完，可能报错
     * @param id
     * @return
     *
     * HystrixCommand
     *    fallbackMethod当该类报错后，启动兜底类paymentInfo_TimeOutHandler 返回访问人数太多
     */
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "5000")  //5秒钟以内就是正常的业务逻辑
    })
    public String paymentInfo_TimeOut(Integer id){
        //int age = 10/0;
        int timeNumber = 3000;
        try { Thread.sleep(timeNumber); } catch (InterruptedException e) { e.printStackTrace(); }
        return "线程池："+Thread.currentThread().getName()+"\t ID"+id+"\t 耗时"+timeNumber+"秒,梁志超";
    }

    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池："+Thread.currentThread().getName()+"\t 8001系统繁忙,请稍后再试。调用失败了呜呜呜";
    }

    //=====服务熔断

    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),  //是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),   //请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),  //时间范围
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"), //失败率达到多少后跳闸
            })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if (id < 0){
            throw new RuntimeException("*****id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t"+"调用成功,流水号："+serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能负数，请稍候再试,(┬＿┬)/~~     id: " +id;
    }



}
